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| using NPOI.HSSF.UserModel;
using NPOI.HSSF.Util;
using NPOI.SS.UserModel;
using NPOI.SS.Util;
using NPOI.XSSF.UserModel;
using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using static NPOI.HSSF.Util.HSSFColor;
namespace Helpers
{
public class ExcelHelper
{
public static string DataToExcel(DataTable dt, List<ExportDataColumn> columnTitle, string title, string path)
{
XSSFWorkbook book = new XSSFWorkbook();
XSSFSheet sheet = book.CreateSheet("Export") as XSSFSheet;
CellRangeAddress region = new CellRangeAddress(0, 0, 0, columnTitle.Count - 1);
sheet.AddMergedRegion(region);
IFont font12 = book.CreateFont();
font12.FontHeightInPoints = 12;
font12.FontName = "微软雅黑";
font12.Boldweight = short.MaxValue;
font12.Color = Black.Index;
ICellStyle cellStyle = book.CreateCellStyle();
cellStyle.Alignment = HorizontalAlignment.Center;
cellStyle.BorderBottom = BorderStyle.Thin;
cellStyle.BorderLeft = BorderStyle.Thin;
cellStyle.BorderRight = BorderStyle.Thin;
cellStyle.BorderTop = BorderStyle.Thin;
cellStyle.SetFont(font12);
cellStyle.FillBackgroundColor = BlueGrey.Index;
for (int i = region.FirstRow; i <= region.LastRow; i++)
{
IRow row = sheet.CreateRow(i);
for (int j = region.FirstColumn; j <= region.LastColumn; j++)
{
ICell singleCell = row.CreateCell((short)j);
singleCell.CellStyle = cellStyle;
}
}
IRow hrow = sheet.GetRow(0);
hrow.Height = 20 * 20;
ICell icellltop0 = hrow.GetCell(0);
icellltop0.CellStyle = cellStyle;
icellltop0.SetCellValue(title + "_" + DateTime.Now.ToString("yyyy-MM-dd"));
ICellStyle TitleStyle = book.CreateCellStyle();
TitleStyle.FillForegroundColor = PaleBlue.Index;
TitleStyle.FillPattern = FillPattern.SolidForeground;
TitleStyle.Alignment = HorizontalAlignment.Center;
TitleStyle.BorderBottom = BorderStyle.Thin;
TitleStyle.BorderLeft = BorderStyle.Thin;
TitleStyle.BorderRight = BorderStyle.Thin;
TitleStyle.BorderTop = BorderStyle.Thin;
IRow TitleRow = sheet.CreateRow(1);
TitleRow.Height = 20 * 15;
for (int i = 0; i < columnTitle.Count; i++)
{
ICell cell = TitleRow.CreateCell(i);
cell.CellStyle = TitleStyle;
cell.SetCellValue(columnTitle[i].Label);
sheet.SetColumnWidth(i, columnTitle[i].ColumnWidth);
}
for (int i = 0; i < dt.Rows.Count; i++)
{
IRow row = sheet.CreateRow(i + 2);
for (int j = 0; j < columnTitle.Count; j++)
{
row.CreateCell(j).SetCellValue(dt.Rows[i][columnTitle[j].Prop].ToString());
}
}
ICellStyle borStyle = book.CreateCellStyle();
borStyle.Alignment = HorizontalAlignment.Center;
borStyle.BorderBottom = BorderStyle.Thin;
borStyle.BorderLeft = BorderStyle.Thin;
borStyle.BorderRight = BorderStyle.Thin;
borStyle.BorderTop = BorderStyle.Thin;
for (int i = 1; i <= dt.Rows.Count + 1; i++)
{
IRow row = sheet.GetRow(i);
row.Height = 20 * 16;
for (int j = 0; j < columnTitle.Count; j++)
{
ICell singleCell = row.GetCell((short)j);
singleCell.CellStyle = borStyle;
}
}
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
string fileName = title + DateTime.Now.ToString("yyyyMMddHHmmssff") + ".xlsx";
using (FileStream fsWrite = File.OpenWrite($"{path}//{fileName}"))
{
book.Write(fsWrite);
}
return fileName;
}
public MemoryStream ImportDcExceptionType(string filePath)
{
IWorkbook workbook = null;
FileStream fs;
using (fs = new FileStream(filePath, FileMode.Open))
{
if (filePath.EndsWith(".xlsx"))
{
workbook = new XSSFWorkbook(fs);
}
else if (filePath.EndsWith(".xls"))
{
workbook = new HSSFWorkbook(fs);
}
if (workbook != null)
{
ISheet sheet = workbook.GetSheetAt(0);
if (sheet != null)
{
int rowCount = sheet.LastRowNum;
for (int i = 1; i <= rowCount; i++)
{
IRow row = sheet.GetRow(i);
var value = row.GetCell(0)?.ToString();
ICellStyle cellStyle = workbook.CreateCellStyle();
cellStyle.FillForegroundColor = HSSFColor.Red.Index;
cellStyle.FillPattern = FillPattern.SolidForeground;
row.GetCell(0).CellStyle = cellStyle;
}
}
}
MemoryStream memoryStream = new MemoryStream();
workbook.Write(memoryStream);
workbook.Close();
return memoryStream;
}
}
public ICellStyle CellStyle { get; set; }
public ExeclTypeEnum ExeclType { get; set; }
public IWorkbook Workbook { get; set; }
public ISheet Sheet { get; set; }
public ICreationHelper Facktory { get; set; }
public IDrawing Drawing { get; set; }
public ExcelHelper(string filePath, int sheetIndex)
{
using (FileStream fs = new FileStream(filePath, FileMode.Open))
{
if (filePath.EndsWith(".xlsx"))
{
ExeclType = ExeclTypeEnum.XLSX;
Workbook = new XSSFWorkbook(fs);
CellStyle = Workbook.CreateCellStyle();
CellStyle.FillForegroundColor = IndexedColors.Red.Index;
CellStyle.FillPattern = FillPattern.SolidForeground;
}
else
{
ExeclType = ExeclTypeEnum.XLS;
Workbook = new HSSFWorkbook(fs);
CellStyle = Workbook.CreateCellStyle();
CellStyle.FillForegroundColor = HSSFColor.Red.Index;
CellStyle.FillPattern = FillPattern.SolidForeground;
}
}
Sheet = Workbook.GetSheetAt(sheetIndex);
Facktory = Workbook.GetCreationHelper();
Drawing = Sheet.CreateDrawingPatriarch();
}
public void MarkError(IRow row, int indexCell, string msg)
{
ICell cell = row.GetCell(indexCell);
if (cell is null)
{
cell = row.CreateCell(indexCell);
}
IClientAnchor anchor = Facktory.CreateClientAnchor();
var comment = Drawing.CreateCellComment(anchor);
comment.Author = "Mr.Guan";
if (ExeclTypeEnum.XLSX == ExeclType)
{
anchor.Col1 = cell.ColumnIndex;
anchor.Col2 = cell.ColumnIndex + 1;
anchor.Row1 = row.RowNum;
anchor.Row2 = row.RowNum + 3;
comment.String = new XSSFRichTextString(msg);
}
else if (ExeclTypeEnum.XLS == ExeclType)
{
anchor.Col1 = cell.ColumnIndex;
anchor.Col2 = cell.ColumnIndex + 3;
anchor.Row1 = row.RowNum;
anchor.Row2 = row.RowNum + 5;
comment.String = new HSSFRichTextString(msg);
}
cell.CellComment = comment;
cell.CellStyle = CellStyle;
}
}
public enum ExeclTypeEnum
{
XLSX = 0,
XLS = 1
}
public class ExportDataColumn
{
public string Prop { get; set; }
public string Label { get; set; }
public int ColumnWidth { get; set; }
}
}
|